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View Full Version : I keep fouling Plugs


MachSp33d
05-11-2005, 07:43 PM
I have a 2002 Honda 400ex. I mean I foul them like Crazy. Whats the reason for this? The dealer sayed it dose it when you over use the choke, How do i prevent this, Higher octane level? Im not sure. Thanks,

-MachSp33d
JDiablo
05-11-2005, 07:46 PM
your jetting it to rich
MachSp33d
05-11-2005, 07:50 PM
Its a STOCK 400ex (thats weird) What should i change the jets to?
xx3003xrdrxx
05-11-2005, 08:50 PM
when you have it all reved up , do you let it slam off the rev limiter , when you have it topped out do you shift down or do you just let all the revs go right into the plug ?
??300expro??
05-11-2005, 09:09 PM
look and see if the air/fuel mixture screw on the bottom is in spec